electret microphone


Also found in: Wikipedia.

electret microphone

[i′lek‚tret ′mī·krə‚fōn]
(engineering acoustics)
A microphone consisting of an electret transducer in which the foil electret diaphragm is placed next to a perforated, ridged, metal or metal-coated backplate, and output voltage, taken between diaphragm and backplate, is proportional to the displacement of the diaphragm.
Mentioned in ?
References in periodicals archive ?
5 Oz Volume Control Knob With Detents Coiled Cord Flexible Boom M-7a Amplified Electret Microphone Tso%d Headset With An Nrr Of 23db.
The students worked under the guidance of James West, a Johns Hopkins research professor in electrical and computer engineering and co-inventor of the electret microphone technology developed for telephones and used today in almost 90 percent of the more than 2 billion microphones produced each year.
This current Jets you connect a powered electret microphone.
5820-99-280-7276 P14360408 CT/Light Patrol Headset (Green)-- Noise-Canceling (NC) Electret Microphone The vented, single-sided headset has an NC Electret microphone fitted to a flexible boom arm.
The headset with noise compensating electret microphone provides a digital platform for the wireless communication between aircraft cockpit and ground crew, even under the noise from running jet engines or rotors.
25" jack for the supplied, calibrated electret microphone.
West was inducted into The National Inventors Hall of Fame in 1999 for the invention of the electret microphone.
West studied hard and went on to invent the Foil Electret Microphone.
Herwig Kogelnik, Pioneer of The Distributed Feedback Laser, and James West, The Inventor of the Electret Microphone, Receive the Nation's Top Technology Honor for Their Contributions in Optical Communications and Electro, Physical and Architectural Acoustics Respectively.
Seminal Bell Labs sound and audio inventions include high fidelity recording (1925), single groove stereo recording (1933), stereophonic recording on film (1941), the laser (1958), today used in all CD and DVD players, the electret microphone (1966), and advances in audio compression to facilitate digital radio technology (1992 - 1999), which allows AM, FM, and satellite stations to broadcast near-CD quality music.
Speakerphone: Featuring an electret microphone, Complete Office Communicator's "hands-free" speakerphone is an added benefit to the PC user allowing more productivity and multitasking while in speakerphone mode.